State profile · Below national median SD

Washington bridge safety

Condition ratings, load ratings, and structural-deficiency data for every public highway bridge in Washington — drawn straight from the FHWA National Bridge Inventory.

8,808
Public bridges
42.4%
Good condition
4.8%
Poor condition
4.8%
Structurally deficient

Total Bridges

8,808

Public highway bridges in Washington

Good Condition

42.4%

3,734 bridges rated 7-9

-7.6pp vs 50% benchmark

Poor Condition

4.8%

424 bridges rated 0-4

Structurally Deficient

4.8%

424 bridges flagged for repair priority

-2.2pp vs national avg 7.0%

Washington vs national bridge condition

Washington — Good condition share 42.4%
National avg

Share of bridges rated 7-9 on the FHWA 0-9 scale (deck, superstructure, substructure all good).

Washington — Structurally deficient share 16.0%
National avg

Lower is better. Bar maxes at 30% (worst-state ceiling). National average sits at 7.0%.

Condition Distribution

Bridge inventory deck-condition mix — Washington (FHWA NBI)

Washington42.39327883742053%37.76112624886467%GoodFairPoorStructurally Deficient
Bridge inventory deck-condition mix — Washington (FHWA NBI)

Counties (39)

Adams 190 Asotin 29 Benton 173 Chelan 154 Clallam 152 Clark 228 Columbia 86 Cowlitz 167 Douglas 40 Ferry 54 Franklin 138 Garfield 54 Grant 314 Grays Harbor 365 Island 8 Jefferson 100 King 1364 Kitsap 119 Kittitas 311 Klickitat 91 Lewis 422 Lincoln 181 Mason 139 Okanogan 163 Pacific 120 Pend Oreille 72 Pierce 502 San Juan 13 Skagit 256 Skamania 120 Snohomish 516 Spokane 360 Stevens 81 Thurston 216 Wahkiakum 36 Walla Walla 200 Whatcom 358 Whitman 351 Yakima 565

Washington vs nearby ranks

Adjacent states on the structurally deficient leaderboard (lower share = better)

States are ranked by share of bridges flagged structurally deficient — the FHWA classification for any span where deck, superstructure, or substructure carries a condition rating of 4 or below. Lower percentages indicate stronger maintenance funding and inspection follow-through. States here sit immediately above and below Washington on the same metric.

06

California

4.60% top marginal rate
Structure
Progressive
Burden @ $100K
$27,040

05

Arkansas

4.71% top marginal rate
Structure
Progressive
Burden @ $100K
$5,544
Selected

53

Washington

4.81% top marginal rate
Structure
Progressive
Burden @ $100K
$8,808

18

Indiana

4.94% top marginal rate
Structure
Progressive
Burden @ $100K
$18,630

20

Kansas

5.25% top marginal rate
Structure
Progressive
Burden @ $100K
$23,867

Bridges Needing Most Attention in Washington

Six lowest-condition bridges in Washington, ranked by composite NBI rating. Each is inspected at least every 24 months.

SILVER CK RD 00670

Structurally Deficient

Over: NINE MILE CREEK

19.05 E SR 21, Ferry, WA

Built 1958 Load: 2.7 t ADT: 47

4TH ST

Poor

Over: MILL CREEK

4TH AND MILL CR, Walla Walla, WA

Built 1908 Load: 2.7 t ADT: 2,624

NO DATA ENTERED

Structurally Deficient

Over: WEST BRANCH LECLERC CREE

NO DATA ENTERED, Pend Oreille, WA

Built 1954 Load: 3.5 t ADT: 5

STEVENS RD. -IRRIG

Poor

Over: DRAIN

00.26 NO CHAMBERS, Yakima, WA

Built 1965 Load: 3.6 t ADT: 68

PEARL HILL RD

Poor

Over: JORDAN CREEK

1.44 E JCT HILAND ORCH RD, Douglas, WA

Built 1953 Load: 4.2 t ADT: 72

FARM ACCESS

Poor

Over: ROZA ID WASTEWAY NO 3

NR PARKER HEIGHTS, WA, Yakima, WA

Built 1955 Load: 4.4 t ADT: 10

All Bridges in Washington

ROAD

Good

Over: BOLT CREEK

0.9 MI N OF HWY 2/65 JCT, King, WA

Built 1988 Load: 38.0 t ADT: 114

I-90

Good

Over: WAHL RD

3.2 E JCT SR 21, Adams, WA

Built 1972 Load: 38.1 t ADT: 5,814

NO DATA ENTERED

Good

Over: SOUTH SITKUM RIVER

NO DATA ENTERED, Clallam, WA

Built 1982 Load: 38.1 t ADT: 50

UNDI ROAD

Good

Over: BEAR CREEK

1.15M E SR101, Clallam, WA

Built 1978 Load: 38.1 t ADT: 66

SR 4

Good

Over: GERMANY CREEK

4.6 E WAHKIAKUM CO, Cowlitz, WA

Built 1980 Load: 38.1 t ADT: 4,665

I-182

Good

Over: ARGENT ROAD

4.8 E BENTON CO, Franklin, WA

Built 1984 Load: 38.1 t ADT: 29,238

SR 243

Good

Over: LOWER CRAB CR

19.6 N JCT SR 24, Grant, WA

Built 1970 Load: 38.1 t ADT: 5,987

NO DATA ENTERED

Good

Over: SPOON CREEK

NO DATA ENTERED, Grays Harbor, WA

Built 1968 Load: 38.1 t ADT: 15

SR 164

Good

Over: R ST

1.2 E JCT SR 18, King, WA

Built 1970 Load: 38.1 t ADT: 33,769

SR 599

Good

Over: 133RD ST

0.3 N JCT I-5, King, WA

Built 1966 Load: 38.1 t ADT: 22,020

I-405

Good

Over: CEDAR RIVER

0.9 N JCT SR 515, King, WA

Built 1994 Load: 38.1 t ADT: 84,707

SR 18

Good

Over: CAREY CREEK TRIBUTARY

3.9 E JCT SR 169, King, WA

Built 1995 Load: 38.1 t ADT: 15,143

SW ADMIRAL WAY

Good

Over: RAVINE, FAIRMOUNT AVE

Fairmount Ave SW, King, WA

Built 1949 Load: 38.1 t ADT: 32,000

Spokane St Viaduct

Good

Over: E MARGINAL WY, 1ST, 4TH

S Spokane St & E Marginal, King, WA

Built 2012 Load: 38.1 t ADT: 42,350

COMA ROAD

Good

Over: BRIM CREEK

2.0 W VADER, Lewis, WA

Built 1960 Load: 38.1 t ADT: 66

CHANDLER ROAD

Good

Over: CHEHALIS RIVER

1.O E DOTY, Lewis, WA

Built 2010 Load: 38.1 t ADT: 500

US 101 S-N RAMP

Good

Over: WETLAND

5.7 S JCT SR 102, Mason, WA

Built 2008 Load: 38.1 t ADT: 1,151

Schaffer Park Rd

Good

Over: EAST FORK SATSOP RIVER

1.29 E Matlock Brady rd, Mason, WA

Built 1993 Load: 38.1 t ADT: 376

BEAR CR - DEWATTO

Good

Over: DEWATTO RIVER

9.56 W OF BELFAIR HWY, Mason, WA

Built 2008 Load: 38.1 t ADT: 79

Deegan Road West

Good

Over: Coffee Creek

2.35 E Shelton Matlock Rd, Mason, WA

Built 2020 Load: 38.1 t ADT: 187

SR 4

Good

Over: SALMON CREEK

2.4 E JCT SR 401, Pacific, WA

Built 1986 Load: 38.1 t ADT: 2,130

NORTH NEMAH RD

Good

Over: WILLIAMS CREEK

7.1 N JCT 4 AND 101, Pacific, WA

Built 1999 Load: 38.1 t ADT: 238

S 15TH ST

Good

Over: N-N RAMP

1.1 N JCT I-5, Pierce, WA

Built 1987 Load: 38.1 t ADT: 3,690

McCUTCHEON RD E

Good

Over: FENNEL CREEK

1.59 E JCT SR162, Pierce, WA

Built 1951 Load: 38.1 t ADT: 2,725

SUMNER BUCKLEY HWY

Good

Over: CWA CANAL

1.5 W JCT SR 410, Pierce, WA

Built 1978 Load: 38.1 t ADT: 2,675

FAIRFAX FOREST RD

Good

Over: EVANS CREEK

2.9 SE SR165, Pierce, WA

Built 1975 Load: 38.1 t ADT: 300

NO DATA ENTERED

Good

Over: UPPER MUDDY RIVER

15.1 MILES FROM THE JUNCT, Skamania, WA

Built 1989 Load: 38.1 t ADT: 282

HOME ACRES RD

Good

Over: EBEY ISLAND VIADUCT

0.7 E JCT I-5, Snohomish, WA

Built 1968 Load: 38.1 t ADT: 1

SR 530

Good

Over: ASHTON CREEK

24.0 E JCT SR 9, Snohomish, WA

Built 1970 Load: 38.1 t ADT: 3,290

SR 524

Good

Over: NORTH CREEK TRIB

4.1 E JCT I-5, Snohomish, WA

Built 2007 Load: 38.1 t ADT: 17,978

ROAD

Good

Over: FOURTH OF JULY CREEK

7.7 MI N OF HWY 2/65 JCT, Snohomish, WA

Built 2004 Load: 38.1 t ADT: 44

Ash Way

Good

Over: Swamp Creek

0.6 SW JCT i-5, Snohomish, WA

Built 2009 Load: 38.1 t ADT: 7,698

I-90

Good

Over: MEDICAL LAKE RD

5.6 E JCT SR 902, Spokane, WA

Built 1966 Load: 38.1 t ADT: 11,131

US 2

Good

Over: W BRANCH LITTLE SPOKANE

14.7 E JCT SR 206, Spokane, WA

Built 1984 Load: 38.1 t ADT: 10,361

SHERMAN VALLEY RD

Good

Over: WADDELL CREEK

0.75 m N of Waddell Cr Rd, Thurston, WA

Built 1982 Load: 38.1 t ADT: 352

SCHOOL LAND ROAD

Good

Over: OVERFLOW CHANNEL

1.5NW ROCHESTER, Thurston, WA

Built 1981 Load: 38.1 t ADT: 381

SR 409

Good

Over: GARDEN SLOUGH

1.6 N FERRY DOCK, Wahkiakum, WA

Built 1982 Load: 38.1 t ADT: 884

SR 542

Good

Over: MCCAULEY CR

1.5 E JCT SR 9, Whatcom, WA

Built 1948 Load: 38.1 t ADT: 9,002

SR 542

Good

Over: MCCAULEY CREEK

1.7 E JCT SR 9, Whatcom, WA

Built 1948 Load: 38.1 t ADT: 8,221

SR 20

Good

Over: COLONIAL CREEK

13.4 E SKAGIT CO, Whatcom, WA

Built 1961 Load: 38.1 t ADT: 1,380

SR 542

Good

Over: COAL CREEK

12.9 E JCT SR 547, Whatcom, WA

Built 1971 Load: 38.1 t ADT: 1,251

NB I-5

Good

Over: INSPECTION LANES/BLDGS

0.2 N JCT SR 548, Whatcom, WA

Built 2009 Load: 38.1 t ADT: 1,143

SR 24

Good

Over: ROZA CANAL

8.8 E JCT I-82, Yakima, WA

Built 1984 Load: 38.1 t ADT: 3,262

US 97

Good

Over: SATUS CREEK

2.4 N KLICKITAT CO, Yakima, WA

Built 1992 Load: 38.1 t ADT: 3,968

NO DATA ENTERED

Good

Over: DEEP CREEK

NO DATA ENTERED, Yakima, WA

Built 2011 Load: 38.1 t ADT: 30

NE 107TH AVENUE

Good

Over: NE PADDEN PARKWAY

AT PADDEN PARKWAY, Clark, WA

Built 1999 Load: 38.2 t ADT: 8,277

COUNTY ARTERIAL

Good

Over: POTHOLES CANAL

0.06 W LANGFORD 605, Franklin, WA

Built 2014 Load: 38.2 t ADT: 972

SCHAFER BOOM ROAD

Good

Over: CAMP CREEK

0.2 S JCT 62920, Grays Harbor, WA

Built 2023 Load: 38.2 t ADT: 97

SR 520

Good

Over: LAKE WASHINGTON

0.3 E JCT SR 513, King, WA

Built 2023 Load: 38.2 t ADT: 18,960

LK DOROTHY RD SE

Good

Over: BIG BLOWOUT CREEK

9.1 MI N OF I-90, King, WA

Built 2015 Load: 38.2 t ADT: 125

Showing 6,801-6,850 of 8,808 bridges

Related

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Data sourced from the FHWA National Bridge Inventory (NBI), latest released cycle. See our methodology for details. Retrieved and formatted by PlainBridges Editorial.

Disclaimer: This information is provided for informational purposes only and does not constitute professional advice. Data is sourced from the FHWA National Bridge Inventory (NBI). A "structurally deficient" rating is a repair-priority signal, not a closure or unsafe-to-cross designation. Consult a qualified civil engineer before making decisions based on this data.

Understanding Bridge Conditions

How FHWA rates bridge condition on a 0-9 scale.

Check Your Daily Bridges

How to look up bridge condition data for bridges on your route.

Read our methodology — how this data is sourced, computed, and verified.